Why doesn't one page go to https?

Question

Digital certificates

All pages except the main one (I visited to change the main one, everything works there) cannot switch to a secure connection. Already tried all the methods described here, nothing helped.

site https://allstudio.by/

Answer 1

You open the source code of your site page and see what is given over http instead of https
and we see that there are 5 links from http on the main page, namely the svg icon

at the bottom right in the footer there is an svg icon (the play button). SVGs are inserted into the page, but at the same time we
xmlns="http://www.w3.org/2000/svg"
replace them with
xmlns="https://www.w3.org/2000/svg"
done

Answer 2

Your picture in a hat with a gladiator is loaded using the http protocol ( allstudio.by/wp-content/uploads/2018/11/34057.jpg ). It is written in css, perhaps the url was not replaced in the constructor.
If the picture is registered through the constructor, you can try to run the site through the better search replace plugin, search for http:// in it and replace it with https://